Elevated supplemental oven for stoves or ranges



No. 6l3,52|'. Patented Nov. 1, I898.

Lu. LONG. ELEVATED SUPPLEMENTAL OVEN FDR STOVES 0B RANGES.

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No. 6|3,52l. Patented Nov. I, I898.

J. N. LONG.

ELEVATED SUPPLEMENTAL OVEN FUR STDVES 0B RANGES.

(Application 11M In, 88, 1898.) 2 Shoots-Shoot 2.

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UNITED STATES PATENT OFFICE.

JAMES N. LONG, OF PHILADELPHIA, PENNSYLVANIA.

ELEVATED SUPPLEMENTAL OVEN FOR STOVES OR RANGES.

SPECIFICATION forming part of Letters Patent No. 613,521, dated November 1, 1898.

Application filed May 23, 1898. Serial No. 681,448. (No model.)

as to cause a thorough circulation of the un-v divided volume of products of combustion through said flues and a consequent effective heating of said supplementary oven. This object I attain in the manner hereinafter set forth, reference being had to the accompanying drawings, in which- Figure 1 is a perspective view of a stove having an elevated supplementary oven constructed in accordance with my invention. Fig. 2 is a sectional plan view of the oven on a larger scale. Fig. 3 is a transverse section of the same, and Fig. 4 is a perspective view of an upper flue-strip forming part of the structure.

The elevated supplementary oven is in the present instance located'alongside of the elevated warming-closet, occupying, in fact, a portion of the space usually given up to said elevated warming-closet, and said supplementary oven consists of an outer casing 1 and an inner casing 2, the latter constituting the actual oven-inclosure and being open at the front, where it is provided with a door 3. At the top, bottom, and ends, as well as the back, however, a flue-space intervenes between the inner and outer casings l and 2, so as to form a bottom flue 4, a top flue 5, end flues 6 and 7, and a rear flue 9, and these flues are provided with flue-strips 10, 11, 12, and 13, the strip 10 cutting off communication between the top flue 5 and the end flue 6, the strip 11 cutting off communication between the top flue 5 and the left-hand portion of the rear flue 9, the strip 12 projecting forwardly into the top flue 5,. and the strip 13 likewise projecting forwardly into the bottom flue 4.

The stovepipe 14 communicates with the lower flue 4 at the left-hand rear corner of the same, and said lower flue is in free communication with the end flues 6 and 7 and with the rear flue 9, the top flue 5 being also in free communication with the end flue 7 and with the right-hand end of the rear flue 9, but not with the end flue 6 or the left-hand end of the rear flue 9, owing to the presence of the flue-strips 10 and 11. As a consequence of this construction the products of combustion from the stovepipe 14 cannot pass directly upward on their way to the escape-pipe 15, which is located at the rear left-hand corner of the top flue 5, said products of combustion being compelled to pass around the front end of the flue-strip 13, thence through the right-hand portion of the bottom flue 4 to the right-hand end flue 7 and rear flue 9, thence up through these flues to the top flue 5, and thence around the front end of the fluestrip 12 and rearwardly to the escape-pipe.

The end flue 6 and the left-hand end of the rear flue 9 are filled with products of combustion, which, however, cannot escape therefrom. The oven 2 is thus surrounded by the products of combustion on all sides except at the front. Consequently the rapid and effective heating of the same can be effected, the volume of the products of combustion not being divided, but directed singly throughout the entire course which they are caused to follow.

The outer casing 1 and the oven-door 2 are by preference of composite construction, each consisting of inner and outer metallic plates with interposed lining or filling of asbestos or other non-conductor of heat, as shown in Figs. 2 and 3, so as to prevent the radiation of heat outwardly from the said casing and door and thereby increase the effect of the heat upon the inclosed oven.

The flue-strip 11, which closes the left-hand upper end of the rear flue 9, may be dispensed with if alike strip is employed to close the left-hand lower end of said rear flue, the purpose of the strip 11 being to prevent direct upward passage of the products of combustion from the stovepipe 14 to the discharge-pipe 15.

Having thus described my invention, I claim and desire to secure by Letters Pat cut-- 1. The combination in an elevated supplementary oven for stoves or ranges, of the outer casing, the inner oven-casing disposed so as to form lines at the top, bottom, ends and rear of said oven, a smoke-pipe communicating with the bottom flue, a dischargepipe communicating with the top flue, and flue-strips for preventing the direct passage of the products of combustion from the smokepipe to the discharge-pipe and causing them to circulate in unbroken volume around the oven, substantially as specified.

2. The combination in an elevated, supplementary oven for stoves or ranges, of the outer casing, the inner oven-casing, forming, with the outer casing, flues at the top, bottom, ends and rear of the oven, horizontal flue-strips for preventing direct upward passage of the products of combustion from the smoke-pipe to the discharge-pipe, and vertical fine-strips in the top and bottom flues for directing the products of combustion for wardly therein, substantially as specified.

3. The combination in an elevated, supplementary oven for stoves or ranges, of the outer casing, the inner oven-casing, forming, with said outer casing, flues at the top, bottom, ends and rear of said oven, a stovepipe communicating with the rear corner of the lower flue, a discharge-pipe communicating with the rear corner of the upper flue, horizontal flue-strips for preventing direct passage of the products of combustion from one pipe to the other through the rear flue and end flue, and vertical strips in the top and bottom fines for directing the products of combustion forwardly therein, substantially as specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JAMES N. LONG.

Witnesses:

F. E. BECHTOLD, J os. I-I. KLEIN. 

